Handheld case assembly



FIG. 1 is a front perspective view illustrating my design for a handheld case assembly;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a front view thereof; and,

FIG. 8 is a rear view thereof.

The broken, dashed line disclosures depict environmental structure and are for illustrative purposes only. They do no form part of the claimed design. 

CLAIM The ornamental design for a handheld case assembly, as shown and described. 